MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The PDF file was flagged by multiple heuristics as containing a link farm pointing to compromised CMS uploads and disposable hosting. The ML classifier and ClamAV also identified it as malicious, specifically a phishing trojan. The embedded URLs suggest an attempt to redirect users to potentially harmful content, aligning with phishing or malware distribution tactics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://henghuitong.com/jingkelun/userfiles/files/20210914122926.pdf In PDF document text
- https://sailstudy.in/ckfinder/userfiles/files/gonoz.pdfIn PDF document text
- https://solener.info/ckfinder/userfiles/files/64295932359.pdfIn PDF document text
- https://cfaegaianascente.pt/portal/userfiles/files/89457467350.pdfIn PDF document text
- https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614128029c0a7---tepexibudeboxiduxakorude.pdfIn PDF document text
- http://www.europesolidaire.eu/userfiles/files/reruno.pdfIn PDF document text
- http://phonphangschool.com/upload/files/68552279634.pdfIn PDF document text
- http://senvietsystem.com/ckeditor/upload/files/jivokerufunapavawafovu.pdfIn PDF document text
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16141923203cf3---nujogopiruzazojevo.pdfIn PDF document text
- https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/ukts17clh4h0iq5ed58i974174/43497760212.pdfIn PDF document text
- http://chornakorn-packing.com/ckfinder/userfiles/files/putigemujaf.pdfIn PDF document text
- https://horacebatten.com/ckfinder/userfiles/files/20196291280.pdfIn PDF document text
- http://xn--b1amishc2fb.xn--p1ai/ckfinder/userfiles/files/surejozureja.pdfIn PDF document text
- http://eyupsifalibitkiler.com/resimler/files/zejorexip.pdfIn PDF document text
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16139969f03b51---sifojoniretuf.pdfIn PDF document text
- https://am-system.eu/ckfinder/userfiles/files/38731370399.pdfIn PDF document text
- https://doublehair.center/upload/ckfinder/files/31014149343.pdfIn PDF document text
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/uht9ok2at6vdsqcsnva93cm9e6/55051490935.pdfIn PDF document text
- http://sergeisurzhin.ru/ckfinder/userfiles/files/torunomirot.pdfIn PDF document text
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16145a73142ba9---dumakapakozawusera.pdfIn PDF document text
- https://arbormaster.us/uploads/files/34773982856.pdfIn PDF document text
- https://vicareyou.com/userfiles/file/mavumijagunaj.pdfIn PDF document text
- https://investir-petroleo.pt/ckfinder/userfiles/files/64899649227.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=alex+rider+eagle+strike+graphic+novel+pdfPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ec96.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC96 | 17588 bytes |
SHA-256: bbd3e4ee3c5e455b6192403c11385de3a5f97847d2e3bc02a8e237537869d11f |
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font_01_sfnt_off00011a2a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A2A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013241.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13241 | 11140 bytes |
SHA-256: bdb8c16f71539e2d8901b7851c2f3af6734b145a20e8fc8d77fe4d6efd8eaebd |
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